Nostr notes by Amar Kulo

just nu oklart, har inte haft problem att jag behövde ladda den ...

2026-06-22T09:34:34Z

In reply to nevent1q…xf4j
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just nu oklart, har inte haft problem att jag behövde ladda den separat. Den sitter på 90% hela tiden, jag tror pga begränsning av laddning så den laddar inte mer än 90% utan bara sitter där, men som lägst den var ner på 85% och sen tillbaka till 90

So now, when I have my #meshcore ESP32 bridge for SenseCAP POC ...

2026-06-22T08:56:09Z

In reply to nevent1q…8qpf
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So now, when I have my #meshcore ESP32 bridge for SenseCAP POC working as it should, it was time to tackle the ESP32 power hunger issue that also :debian: 𝕤𝕖𝕝𝕖𝕒 :sunwave: (npub1est…r25g) pointed out.

As I can't run deep sleep, and even light sleep behaves almost the same, killing Wi-Fi, etc. I did the next best thing. Downclocked CPU freq to 80MHz and lowered chatter to the bare minimum.

This resulted in 4-5x improvements directly.

Here are some pictures before and after, but before ESP32 was sitting around 0.1-0.2mA and CPU was around 60-65C. After the fixes, the CPU is under 50C, and power draw is between 0.035 and 0.042 mA. I am happy with this, so I will run it outside for some time to see how it works.

for now this is POC, will play a bit more with deep sleep, or if ...

2026-06-18T08:12:28Z

In reply to nevent1q…wgw5
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for now this is POC, will play a bit more with deep sleep, or if needed replace it with something else if this is not working good enough. With those pins exposed as RX and TX UART, you can connect whatever you want to it, as long as it has small format and can fit the case. Need also to see how much solar will help here when both devices are working together.

So I did a thing. I bought a Seeed Studio SenseCAP Solar node to ...

2026-06-16T21:24:10Z

So I did a thing.

I bought a Seeed Studio SenseCAP Solar node to have as my #meshcore repeater. While it works ok as a repeater, I still wanted something it didn't have, and that was #mqtt to connect it to an MQTT broker.

SenseCAP had one feature that I didn't need: GPS, and didn't have one that I did need: Wi-Fi and something to run MQTT from, but that also meant that I could remove the GPS module and reuse GPIOs from it.

After some playing with firmware and testing, I managed to recompile the meshcore firmware (or applications, as they call them)) to output all packages to the UART (the serial port for us who still remember it). GPS module has been removed and replaced by an ESP32-S3-Zero, which was reprogrammed with MicroPython.

All in all, it works perfectly. Now we will see how much solar can charge and how much the batteries hold, and so far I am happy with the results. Everything still fits in the same box and is waterproof, making it still suitable for mounting outside.

Next project is to increase output to 1W and place it as high as possible to reach other repeaters.

To be continued.

P.S. I still blame :debian: 𝕤𝕖𝕝𝕖𝕒 :sunwave: (npub1est…r25g) for showing me this and pulling me into this rabbit hole :D

I blame exclusively @npub1est…r25g for this new #meshcore ...

2026-06-08T17:24:17Z

I blame exclusively :debian: 𝕤𝕖𝕝𝕖𝕒 :sunwave: (npub1est…r25g) for this new #meshcore rabbit hole I’m in. I take no responsibility whatsoever for it!

Jag älskar när saker kommer till rätt användning. ...

2026-05-25T12:20:58Z

In reply to nevent1q…lly9
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Jag älskar när saker kommer till rätt användning. :debian: 𝕤𝕖𝕝𝕖𝕒 :sunwave: (npub1est…r25g) skicka mail till amar snabel-a kulo punkt me, så tar vi det därifrån. Jag bor i Sandared, så du kan hämta den när som helst eller vi får lösa något.

trevligt! Jag har en fin maskin som jag skulle kunna bortskänka ...

2026-05-25T11:19:01Z

In reply to nevent1q…5dlv
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trevligt! Jag har en fin maskin som jag skulle kunna bortskänka till makerspace. En Snapmaker A350 med en del reservdelar. Den har både 3D-utskrift, laser och CNC-huvud. Just nu står den och samlar damm hemma hos mig, och det gör mig ledsen, så jag vill hellre ge bort den till någon makerspace som kan använda den än att den bara står oanvänd.

makerspace in Borås?

2026-05-25T09:46:58Z

In reply to nevent1q…v69f
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makerspace in Borås?