New Build Issues


 
J

JasonParallel

New member
Just finished soldering up the board and tried booting it up. I am able to get to the linkmeter website but it can't talk to the heatermeter. "No HeaterMeter board attached" message


Sep 8 15:44:13 OpenWrt daemon.info avahi-daemon[490]: Service "Web Server on OpenWrt" (/etc/avahi/services/http.service) successfully established.
Jan 4 21:55:09 OpenWrt user.warn lucid[398]: No response from HeaterMeter, running avrupdate
Jan 4 21:55:09 OpenWrt kern.info kernel: [ 31.252173] bcm2708_spi bcm2708_spi.0: SPI Controller at 0x20204000 (irq 80)
Click to expand...
Full log at http://pastebin.com/yB2Ber86

I tried running a manual flash and it appeared to work
hm.hex 100% |*******************************| 66716 0:00:00 ETA
Stopping LinkMeter OK

LinkMeter platform is BCM2708
AVR fuses ffd705 OK

0c30822fd7c575f7221bedeb404ea093 /tmp/hm.hex
hmdude: compiled on Oct 3 2014 at 09:58:46
Using port: /dev/spidev0.0
Loading ihex file: "/tmp/hm.hex" (23712 bytes)

0% | | 0 (0.0s)
0% | | 0 (0.0s)
5% |## | 1186 (0.1s)
10% |##### | 2372 (0.2s)
15% |####### | 3558 (0.4s)
20% |########## | 4744 (0.5s)
25% |############ | 5928 (0.6s)
30% |############### | 7114 (0.7s)
35% |################# | 8300 (0.8s)
40% |#################### | 9486 (1.0s)
45% |###################### | 10672 (1.1s)
50% |######################### | 11856 (1.2s)
55% |########################### | 13042 (1.3s)
60% |############################## | 14228 (1.4s)
65% |################################ | 15414 (1.6s)
70% |################################### | 16600 (1.7s)
75% |##################################### | 17784 (1.8s)
80% |######################################## | 18970 (1.9s)
85% |########################################## | 20156 (2.0s)
90% |############################################# | 21342 (2.1s)
95% |############################################### | 22528 (2.3s)
100% |##################################################| 23712 (2.4s)
Update successful
Starting LinkMeter OK
Click to expand...

Connected to the Rpi powered via usb I get the yellow light turning on and then off and the top line of the LCD lighting up. The green light seems to go on and off sometimes also. I was getting a blinking cursor in this config before but only when the network cable was attached.
When disconnecting the Rpi and powering the heatermeter with the linksys power adapter I get the green and the red light turning on but nothing on the lcd.

Based on this thread http://tvwbb.com/showthread.php?60573-New-build-Link-meter-problems and the great color coded schematic, I have started trying to debug things.

ATmega Rx to FTDI RX and ATmega Tx to FTDI TX have good continuity.
ATmega Rx to Rpi Txd and ATmega Tx to Rpi Rxd (I can't quite tell if the last letter is a d or not)

Next I tested power and things got weird.
Connected to Rpi powered via usb I only get 4.5v on the 5v pins on the Rpi connector. At the 5v connector to IC1, the blower ethernet, the 3.3v reg, the 5v pin of the lcd I am only reading 2.5 v. The output of the 3.3v reg is down around 2 based on the low 5v input.

Removing the Rpi and connecting the heatermeter via the linksys power adapter I get a proper 5v on all the pins and 3.3 out of the 3.3v reg.

Board pics at https://goo.gl/photos/D4mefWFg9xoPPSdb8
 
Do you have continuity as per the pic below?

MxfkAYel.jpg


I'd also pull the Atmega328 from the socket and test for continuity from the top side of the atmega socket to the RXD and TXD pins on the RasPi header on the board.

Also, this pin doesn't look like it's properly in the socket from this angle.

IR6Munol.jpg
 
Last edited:
Rx and Tx test good from pin of Atmega328 to Rpi connector.

That one leg was bent a bit but tested good for the connection to the bottom of the board. I'll straighten it out just in case. Hopefully it will not break off.
 
Can you telnet or ssh in and run these commands?

Code: 
cat /dev/ttyAMA0

Code: 
lmclient LMDC,0
 
I think so. I would try with the RasPi and HM board mated, powered only by the 12v DC jack.
 
Hooked up with the 12v jack I see the correct 5v at the input to the 3.3 v reg and 3.3 v out of it but the 5v pins into the Rpi (24 and 26) are showing a few volts shy of 5v. The Rpi is not starting up(no lights no network connection).
 
I added a jumper wire from the 5v off the 5v reg to the 5v pin on the Rpi and it started working. I guess I might have somehow damaged the trace.
 
Nicely done! One thing to note, when zooming in on your images, I saw a lot of the soldering connections either "balled up" or looking a little sparse.

Here's an example of what a bad and good soldering connection looks like.

0OA7YY0.png

Pic stolen from the intarweb.
 
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