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Wiki source code of DMT01

Version 56.1 by Mengting Qiu on 2025/08/05 08:46
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1
2
3 [[image:1753592237986-145.png||height="354" width="118"]] [[image:1753592287802-550.png||height="237" width="341"]]
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10 (% aria-label="macro:toc widget" contenteditable="false" role="region" tabindex="-1" %)
11 (((
12 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
13 )))
14
15
16
17 = 1.  Introduction =
18
19 == 1.1 ​ What is DMT01 Wireless Meat Thermometer ==
20
21
22 The DMT01 is a (% style="color:blue" %)professional-grade wireless meat thermometer(%%) engineered for accurate, real-time temperature monitoring in commercial cooking environments. Ideal for restaurants, central kitchens, catering services, and food processing facilities, the DMT01 ensures consistent results across various cooking methods—including grilling, smoking, roasting, deep-frying, sous vide, baking, and more. Its precise monitoring helps improve cooking efficiency, ensure food safety, and meet HACCP compliance standards.
23
24 The system consists of two components:
25 - (% style="color:blue" %)Food-grade BLE High-Temperature Probe(%%) – A durable, high-heat resistant probe that measures internal food temperature during cooking.
26 - (% style="color:blue" %)Charging Base with BLE & LoRaWAN Forwarder(%%) – This base not only charges the probe but also acts as a communication bridge. It receives temperature data from the BLE probe and transmits it via the LoRaWAN long-range wireless protocol to your IoT platform or monitoring system.
27
28 With its dual wireless support ((% style="color:blue" %)BLE for close-range/small design(%%) and (% style="color:blue" %)LoRaWAN for long-range data transmission(%%)), the DMT01 is ideal for both home cooking enthusiasts and commercial kitchen environments seeking smart, connected temperature monitoring.
29
30 == ​1.2  Features ==
31
32 * Wireless Meat Thermometer – Designed for accurate and reliable cooking temperature monitoring
33 * Food-Grade Probe – Safe for food contact and dishwasher-compatible for easy cleaning
34 * BLE 5.1 Broadcasting – Supports real-time local data transmission via Bluetooth Low Energy
35 * LoRaWAN Connectivity – Enables long-range, low-power data transmission to IoT platforms
36 * Smart Uplink Triggering – Supports periodic data reporting and real-time alerts on temperature thresholds
37
38 (% style="display:none" %)
39
40 == 1.3 Specification ==
41
42
43 (% style="color:blue" %)**Common DC Characteristics:**
44
45 * Supply Voltage: +5v via USB Type-C
46 * Operating Temperature:
47
48 (% style="color:blue" %)**Food Probe Spec:**
49
50 * Length: 126mm
51 * Diameter: 6mm
52 * Food temperature: -30 ~~110 °C, Accuracy: ±0.5°C
53 * Ambient temperature: 0 ~~380°C, Accuracy: ±5°C
54 * Wireless: BLE 5.1
55 * Distance: ≥ 30m
56 * Battery: 4mAh
57 * Recharge time: ＜ 2 hours
58 * Battery Duration: ＞30 hours
59 * IP Rate: IP67, Dish Washer proof
60
61
62
63 (% style="color:blue" %)**Charger Spec:**
64
65 * BLE v5.1 + LoRaWAN
66 * Power Input: USB Type-C, +5v
67 * Battery: Li-ion , 3000mAh
68 * Recharge time: ＜ 2 hours
69
70
71
72
73 == 1.4 ​ Applications ==
74
75 * Commercial Kitchen
76 * Restaurant
77 * Catering
78 * Food Processing
79 * Central Kitchen
80 * Cloud Kitchen
81 * HACCP Monitoring
82 * Food Safety
83 * Meat Factory
84 * Industrial Cooking
85
86 == 1.5 Product Apperance ==
87
88 (% class="wikigeneratedid" %)
89 [[image:1753594523550-152.png||height="462" width="416"]]
90
91
92 == 1.6  Working mode ==
93
94
95 (% style="color:blue" %)**Deep Sleep Mode:**(%%)** **Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.
96
97 (% style="color:blue" %)**Working Mode:**(%%) In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
98
99
100 == 1.7 LED Status ==
101
102
103 The DMT01 uses a dual-color LED to indicate system status:
104
105 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)
106 |(% style="background-color:#4f81bd; color:white; width:196px" %)**LED Behavior**|(% style="background-color:#4f81bd; color:white; width:305px" %)**Description**
107 |(% style="width:196px" %)Green breathing effect|(% style="width:305px" %)Probe is inserted and charging
108 (LED turns off immediately when probe is removed)
109 |(% style="width:196px" %)Red solid (5 seconds)|(% style="width:305px" %)Mode switched successfully (after 1-3s button press)
110 |(% style="width:196px" %)Red blinking (15 seconds)|(% style="width:305px" %)Charging base low battery (<15% capacity)
111 |(% style="width:196px" %)Red/Green alternating blink (3 seconds)|(% style="width:305px" %)Device reset in progress (after 3s long press)   
112 |(% style="width:196px" %)Single green blink|(% style="width:305px" %)BLE connection established between probe and base
113
114
115
116 == 1.8 Button Function ==
117
118 [[image:1754120439617-600.jpg||height="404" width="404"]]
119
120 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:536.222px" %)
121 |=(% style="width: 147px; background-color: rgb(79, 129, 189); color: white;" %)**Behavior on ACT**|=(% style="width: 130px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 254px; background-color: rgb(79, 129, 189); color: white;" %)**Action**
122 |(% style="background-color:#f2f2f2; width:147px" %) [[image:1754045287749-587.png]]>3s|(% style="background-color:#f2f2f2; width:130px" %)Active Device|(% style="background-color:#f2f2f2; width:254px" %)(((
123 Red/Green alternating blink (3 seconds), DMT01 will enter working mode and start to JOIN LoRaWAN network.
124 When the probe is placed in the repeater to charge, the green LED above the relay box will have a breathing effect. When the probe is taken out, the LED light will go out.
125 )))
126 |(% style="background-color:#f2f2f2; width:147px" %)[[image:1754045287749-587.png]] 1~~3s|(% style="background-color:#f2f2f2; width:130px" %)Switch working mode|(% style="background-color:#f2f2f2; width:254px" %)(((
127 There are three operating modes:
128 Default LoRaWAN and Bluetooth broadcast mode,
129 Separate LoRaWAN mode
130
131 Separate Bluetooth broadcast mode.
132 (% style="color:red" %)**Note:**(%%) To switch modes, remove the probe and press the button; otherwise, the mode will not switch.
133 )))
134
135
136
137 == 1.9 Power on device and Recharge Probe ==
138
139
140
141
142 = 2.  Use DMT01 =
143
144 == 2.1  How it works ==
145
146 (((
147 (((
148
149
150 DMT01 Include two parts,
151
152 1. The food grade probe : used to measure the meat temperature
153 1. The Charger which is also a LoRaWAN End node: used to connect the probe via BLE and get the temperature and send via LoRaWAN to IoT server.
154
155
156
157 Consider the BLE coverage , there is two cases:
158
159 === **Connection Mode: Probe is near by the Charge, within BLE range** ===
160
161 Probe will establish connection to the charge via BLE.  and the data flow is as below.
162 )))
163
164 [[image:1753622303925-386.png]]
165
166
167 === **Broadcast Mode: Probe is far away from the Charge, out of BLE range** ===
168
169 Probe will auto swtich to BLE broadcast mode and broadcast the data via BLE. Any BLE Scaner can pick up the signal and send to IoT server.
170
171 For example:
172
173 1) User can use BH01 BLE to LoRaWAN converter to pick up the BLE signal to IoT Server
174
175 2) User can use Mobile phone to get the broadcast signal and further process.
176
177
178 == 2.2 Activate Device ==
179
180 To use DMT01 send data to LoRaWAN network, user need to:
181
182 1. Input the OTAA Keys in LoRaWAN Network Server
183 1. Make sure there is LoraWAN network
184 1. Press the button on the DMT01 for more than 3 seconds, DMT01 will start to connect to LoRaWAN network
185
186
187
188 After the DMT01 Join LoRaWAN network, once user take out the probe, the probe will start to measure temperature and user will be to see the data on the server.
189 )))
190
191
192 == 2.3 ​Quick guide to connect to LoRaWAN server (OTAA) ==
193
194
195 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
196
197 The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
198
199 [[image:1754298519453-808.jpg||height="211" width="951"]]
200
201
202 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DMT01.
203
204 Each DMT01 is shipped with a sticker with the default device EUI as below:
205
206 [[image:1754298588891-599.jpeg]](% style="display:none" %)
207
208 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:(% style="display:none" %)
209
210 (% style="color:blue" %)**Create the application.**
211
212 [[image:1754298671647-982.png]]
213
214 [[image:1754298685721-106.png]]
215
216 (% style="color:blue" %)**Add devices to the created Application.**
217
218 [[image:1754298708270-733.png]]
219
220 [[image:1754298719336-394.png]]
221
222 (% style="color:blue" %)**Enter end device specifics manually.**
223
224 [[image:1754298737089-161.png]]
225
226 (% style="color:blue" %)**Add DevEUI and AppKey.**
227
228 (% style="color:blue" %)**Customize a platform ID for the device.**
229
230 [[image:1754298751553-229.png]]
231
232
233 (% style="color:blue" %)**Step 2: **(%%)Add decoder
234
235 In TTN, user can add a custom payload so it shows friendly reading.
236
237 Click this link to get the decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/>>url:https://github.com/dragino/dragino-end-node-decoder/tree/main/]]
238
239 Below is TTN screen shot:
240
241 [[image:1754298862776-783.png||height="609" width="1426"]]
242
243 [[image:1754299076396-787.png]]
244
245 (% style="color:blue" %)**Step 3:**(%%) Activate on DMT01
246
247 Press the button for 3 seconds to activate the DMT01.
248
249 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
250
251 [[image:1754298481895-828.png||height="441" width="1387"]]
252
253
254
255 == 2.3 LoRaWAN Payload ==
256
257 === 2.3.1 Device Status, FPORT~=5 ===
258
259
260 Users can use the downlink command(**0x26 01**) to ask DMT01 to send device configure detail, include device configure status. DMT01 will uplink a payload via FPort=5 to server.
261
262 The Payload format is as below.
263
264 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
265 |(% colspan="6" style="background-color:#4f81bd; color:white" %)**Device Status (FPORT=5)**
266 |(% style="width:103px" %)**Size (bytes)**|(% style="width:91px" %)**1**|(% style="width:98px" %)**2**|(% style="width:103px" %)**1**|(% style="width:112px" %)**1**
267 |(% style="width:103px" %)Value|(% style="width:91px" %)Sensor Model|(% style="width:98px" %)Firmware Version|(% style="width:103px" %)Frequency Band|(% style="width:112px" %)Sub-band
268
269 Example in TTN:
270
271 [[image:1754299464263-797.png||height="274" width="1384"]]
272
273
274 (% style="color:#037691" %)**Sensor Model**(%%): For DMT01, this value is 0x4B
275
276 (% style="color:#037691" %)**Firmware Version**(%%): 0x0101, Means: v1.0.1 version
277
278 (% style="color:#037691" %)**Frequency Band**(%%):
279
280 0x01: EU868
281
282 0x02: US915
283
284 0x03: IN865
285
286 0x04: AU915
287
288 0x05: KZ865
289
290 0x06: RU864
291
292 0x07: AS923
293
294 0x08: AS923-1
295
296 0x09: AS923-2
297
298 0x0a: AS923-3
299
300 0x0b: CN470
301
302 0x0c: EU433
303
304 0x0d: KR920
305
306 0x0e: MA869
307
308 (% style="color:#037691" %)**Sub-Band**(%%):
309
310 AU915 and US915:value 0x00 ~~ 0x08
311
312 CN470: value 0x0B ~~ 0x0C
313
314 Other Bands: Always 0x00
315
316
317 === 2.3.2  Sensor Data. FPORT~=2 ===
318
319
320 Sensor Data is uplink via FPORT=2
321
322 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
323 |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
324 **Size(bytes)**
325 )))|=(% style="width: 40px;background-color:#4F81BD;color:white" %)4|=(% style="width: 90px;background-color:#4F81BD;color:white" %)1|=(% style="width: 150px; background-color: #4F81BD;color:white" %)6|=(% style="width: 80px; background-color: #4F81BD;color:white" %)1|=(% style="width: 80px; background-color: #4F81BD;color:white" %)1|=(% style="width: 80px; background-color: #4F81BD;color:white" %)2|=(% style="width: 80px; background-color: #4F81BD;color:white" %)2
326 |(% style="width:99px" %)Value|(% style="width:69px" %)(((
327 Timestamp
328
329
330 )))|(% style="width:130px" %)DevMode|(% style="width:194px" %)MACaddr|(% style="width:106px" %)ProbeBat|(% style="width:97px" %)(((
331 BoxBat
332 )))|(% style="width:97px" %)Food temperature|(% style="width:97px" %)Ambient temperature
333
334 [[image:1754300947187-648.png||height="641" width="1351"]]
335
336
337
338 ==== (% style="color:#4472c4" %)**Unit timestamp**(%%) ====
339
340 Unit TimeStamp Example: 689085D7(H) = 1754301911(D)
341
342 Put the decimal value into this link([[https:~~/~~/www.epochconverter.com)>>https://www.epochconverter.com]])to get the time.
343
344
345 ==== (% style="color:#4472c4" %)**DevMode**(%%) ====
346
347 **Example**：
348
349 If payload is 0x01: BLE_LoRa
350
351 If payload is 0x02: LoRa
352
353 If payload is 0x03: BLE
354
355
356 ==== (% style="color:#4472c4" %)**MACaddr**(%%) ====
357
358 **Example**:
359
360 If the payload is C12309250F1A, the MACaddr is C12309250F1A
361
362
363 ==== (% style="color:#4472c4" %)**ProbeBat**(%%) ====
364
365 **Example:**
366
367 If payload is 0x64 = 100%
368
369
370 ==== (% style="color:#4472c4" %)**BoxBat**(%%) ====
371
372 **Example:**
373
374 If payload is 0x46 = 70%
375
376
377 ==== (% style="color:#4472c4" %)**Food temperature**(%%) ====
378
379 Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
380
381 **Example**:
382
383 If payload is: D300H = 00D3H, temp = 00D3H /10 = 21.1 degree
384
385 If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
386
387
388 ==== (% style="color:#4472c4" %)**Ambient temperature**(%%) ====
389
390 Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
391
392 **Example**:
393
394 If payload is: D200H = 00D2H, temp = 00D2H /10 = 21.0 degree
395
396 If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
397
398
399
400 == 2.4 Bluetoothe Broadcast Payload ==
401
402 === 2.4.1 How to use the scanning tool ===
403
404
405
406
407 === 2.4.2 Data Analysis ===
408
409 Scan and obtain DMT01 device broadcast data through a third-party mobile phone app (such as nRF Connect)
410
411 Example：
412
413 Note: The following data is obtained through the **nRF Connect tool**.
414
415 [[image:1754305290140-806.jpg||height="680" width="432"]]
416
417
418 If the scanned payload is 0x0201060609444D5430310EFF  **01C12309250F1AD100CD006446   **0512E001E001
419
420 (% style="color:red" %)**Note**(%%)：
421
422 * The first 12 bytes in the payload are the Bluetooth packet header data and do not need to be decoded.
423 * The last 6 bytes in the payload are the Bluetooth packet trailer data and do not need to be decoded.
424
425 So the payload is：**01C12309250F1AD100CD006446**
426
427
428 ==== (% style="color:#4472c4" %)**Bluetooth data packet frame header**(%%) ====
429
430 Example: 0x0201060609444D5430310EFF
431
432
433 ==== (% style="color:#4472c4" %)**DevMode**(%%) ====
434
435 **Example**：
436
437 If payload is 0x01: BLE_LoRa
438
439 If payload is 0x02: LoRa
440
441 If payload is 0x03: BLE
442
443
444 ==== (% style="color:#4472c4" %)**MACaddr**(%%) ====
445
446 **Example**:
447
448 If the payload is C12309250F1A, the MACaddr is C12309250F1A
449
450
451 ==== (% style="color:#4472c4" %)**ProbeBat**(%%) ====
452
453 **Example:**
454
455 If payload is 0x64 = 100%
456
457
458 ==== (% style="color:#4472c4" %)**BoxBat**(%%) ====
459
460 **Example:**
461
462 If payload is 0x46 = 70%
463
464
465 ==== (% style="color:#4472c4" %)**Food temperature**(%%) ====
466
467 Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
468
469 **Example**:
470
471 If payload is: D300H = 00D3H, temp = 00D3H /10 = 21.1 degree
472
473 If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
474
475
476 ==== (% style="color:#4472c4" %)**Ambient temperature**(%%) ====
477
478 Because the food temperature data is a little-endian sequence, the order of the front and back bytes needs to be swapped during decoding.
479
480 **Example**:
481
482 If payload is: D200H = 00D2H, temp = 00D2H /10 = 21.0 degree
483
484 If payload is: 3FFFH  = FF3F , temp = (FF3FH - 65536)/10 = -19.3 degrees.
485
486
487 ==== (% style="color:#4472c4" %)**Bluetooth data packet frame tail**(%%) ====
488
489 Example: 0x0512E001E001
490
491
492
493 = 3. Configure DMT01  ~-~- 需要修改 =
494
495 == 3.1 Configure Methods ==
496
497 User can use LoRaWAN downlink command to configure the DMT01
498
499 (((
500 (((
501 == 3.2 Downlink Commands Set ==
502
503
504 (% class="box infomessage" %)
505 (((
506 To be updated...
507 )))
508 )))
509 )))
510
511
512 = 4. Firmware update =
513
514
515 **Firmware download link **(% class="mark" %)(To be updated...)
516
517 User can upgrade the firmware for DMT01 charger. The charger include two piece of software:
518
519 * For LoRa part: OTA firmware update via LoRa:.
520
521 * For BLE and controller part.
522
523 == 4.1 Update LoRa software ==
524
525
526 == 4.2 Update BLE software ==
527
528
529 (((
530
531 )))
532
533 = 5.  FAQ =
534
535
536
537 = 6.  Order Info =
538
539
540 Part Number: (% style="color:blue" %)**DMT01-XX**
541
542 (% style="color:red" %)**XX:**
543
544 * **EU433**: Frequency bands EU433
545 * **EU868**: Frequency bands EU868
546 * **KR920**: Frequency bands KR920
547 * **CN470**: Frequency bands CN470
548 * **AS923**: Frequency bands AS923
549 * **AU915**: Frequency bands AU915
550 * **US915**: Frequency bands US915
551 * **IN865**: Frequency bands IN865
552 * **CN779**: Frequency bands CN779
553
554 = 7. ​ Packing Info =
555
556
557 (% style="color:#037691" %)**Package Includes:**
558
559 * DMT01 -  Digital Meat Thermoneter x 1
560
561 (% style="color:#037691" %)**Dimension and weight:**
562
563 * Device Size: cm
564 * Device Weight: g
565 * Package Size / pcs : cm
566 * Weight / pcs : g
567
568 = 8.  ​Support =
569
570
571 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
572 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].