Search found 25 matches

by jburgues
Tue Oct 15, 2019 10:54 am
Forum: General Questions
Topic: Incorrect Frame Sequence in binary frame
Replies: 3
Views: 5237

Incorrect Frame Sequence in binary frame

Hello, I noticed that Frame SEQ number in the header of the binary frame, used to detect missing frames, is incorrect for two values: 17 & 19. I am using Xbee_868. See attached plot of FrameSEQ versus time (https://ibb.co/D92L7RB) and log (https://gofile.io/?c=8pLfie). The peaks you see correspond t...
by jburgues
Thu Oct 10, 2019 6:08 pm
Forum: Sensor Boards
Topic: CO and H2S sensor measurements take 5 s
Replies: 8
Views: 5493

Re: CO and H2S sensor measurements take 5 s

Hello again, In an attemp to reduce the measurement time, I'm looking at the 100-ms delays you introduce after calling to LMP.setModeReg() and digitalWrite(sensor_config.i2c_pin, HIGH); See below. Why do we need this delay? Could it be reduced? What is the minimum value? Is it necessary to call LMP....
by jburgues
Fri Sep 20, 2019 12:24 pm
Forum: General Questions
Topic: Prepare SD card to avoid failure
Replies: 1
Views: 1591

Prepare SD card to avoid failure

Hello, I recently bought a microSD card for my waspMote (not the one provided by Libelium). When any write operation fails, the waspMote program halts. Buying the SD card from Libelium (sold in packs of 5) costs 100 euros (incl handling and shipping). Can any one explain: 1) how to prepare my microS...
by jburgues
Tue Sep 17, 2019 12:58 pm
Forum: Sensor Boards
Topic: CO and H2S sensor measurements take 5 s
Replies: 8
Views: 5493

Re: CO and H2S sensor measurements take 5 s

You are right. The 4-AFE sensors (CO and SO2) take 5.5s/measurement whereas the 3-AFE sensors (NH3, H2S) are much faster (0.75s/measurement). Find below the serial output for one sensor (CO) that takes 5s per measurement and one sensor (NH3) that takes 0.75 s/measurement (I added the stopwatch time ...
by jburgues
Tue Sep 17, 2019 8:04 am
Forum: Networking 802.15.4 / LoRaWAN / Sigfox / WIFI / GPRS / 3G / 4G...
Topic: Frames get truncated via XBee868
Replies: 3
Views: 3436

Re: Frames get truncated via XBee868

Hello,

The problem was solved by using xBee868LP instead of xBee868.

Thanks,
Javier.
by jburgues
Mon Sep 16, 2019 7:52 pm
Forum: Sensor Boards
Topic: CO and H2S sensor measurements take 5 s
Replies: 8
Views: 5493

Re: CO and H2S sensor measurements take 5 s

Sorry, my comments such as "// This one takes 5.5 s" are in the wrong place. They should be at the side of the calls to CO_sensor.getConc(), etc.

Javier.
by jburgues
Mon Sep 16, 2019 7:48 pm
Forum: Sensor Boards
Topic: CO and H2S sensor measurements take 5 s
Replies: 8
Views: 5493

Re: CO and H2S sensor measurements take 5 s

Hello, This is the code (I measure the time with a stopwatch based on the prints to the serial port): Gas CO2_sensor(SOCKET_1); Gas CO_sensor(SOCKET_5); Gas NH3_sensor(SOCKET_2); Gas SO2_sensor(SOCKET_6); Gas H2S_sensor(SOCKET_3); float CO2_conc; // Stores the concentration level in ppm float CO_con...
by jburgues
Mon Sep 16, 2019 11:09 am
Forum: Sensor Boards
Topic: CO and H2S sensor measurements take 5 s
Replies: 8
Views: 5493

CO and H2S sensor measurements take 5 s

Hello, I'm testing the Gases PRO board and I noticed that the CO sensor (SOCKET_5) and H2S sensor (SOCKET_3) take around 5.5s to complete a reading (each one) while two other sensors (NH3 and SO2) connected to Sockets 2 and 6 return the measurement in less than 1 s. Is this normal? Is this related t...
by jburgues
Fri Sep 13, 2019 10:00 am
Forum: Networking 802.15.4 / LoRaWAN / Sigfox / WIFI / GPRS / 3G / 4G...
Topic: Frames get truncated via XBee868
Replies: 3
Views: 3436

Frames get truncated via XBee868

Hello, I am trying to send frames of length 178 bytes from a waspMote with Xbee868 to a USB Gateway Xbee868. At the same time I am printing the frame via USB wired connection. The problem I am facing is that via USB I can receive the entire frame but via 868 I only receive part of the frame. See ima...
by jburgues
Fri Sep 13, 2019 1:02 am
Forum: Sensor Boards
Topic: Gases Pro free analog/digital pins?
Replies: 5
Views: 4956

Gases Pro free analog/digital pins?

Hello, I am using the Gases PRO sensor board on the waspMote but I also need to use some analog pins, digital pins and a UART. Which analog pins (A1-A7), digital pins (D1-D8) and UART pins (Aux serial rx/tx) are not used by the gases PRO board so I can safely use them? Do you foresee any potential p...