ESP32 USB-C 38-Pin Wi-Fi + Bluetooth Dev Board $6.00 + $3 Delivery (Free Over $100) @ Zaitronics

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• 

  socialistshroom on 17/12/2024 - 19:52

  -1

  this or raspberry pi?

  • 

    bio on 17/12/2024 - 19:55

    +12

    …or a 64-core Threadripper? What's your use case?

    • 

      socialistshroom on 17/12/2024 - 23:37

      Just general IOT usage. Smart lighting, routines, etc. Also pihole but idk if you can use raspbian with this.

      I currently run pihole and unbound on a 2w using raspbian lite

      • 

        iLikeBargainz on 18/12/2024 - 00:06

        +3

        this is ~1/16th the price at the will act as a middle man for IoT devices for smart lighting, scripts, small pieces of code, automation, etc.. But an esp32 cannot run an operating system.. You cannot run raspbian on an esp32.

        What are you trying to do? Consider pming me and I can give you some clarity on your path of least resistance.

        • 

          socialistshroom on 18/12/2024 - 00:50

          @iLikeBargainz: thank you for the info, tbh I don't have anything planned yet, just curious about it all. I appreciate your offer for help though :)

        • 

          Russ on 18/12/2024 - 01:21

          @iLikeBargainz:

          esp32 cannot run an operating system

          ESP32 and ESP8266 can run Mongoose OS, but it appears to be a very basic OS, it can only download and execute programs.

      • 

        bio on 18/12/2024 - 10:11

        Also pihole but idk if you can use raspbian with this.

        I don't think you can run stock pi-hole on an ESP32, but there are similar ad blockers designed for it such as https://github.com/s60sc/ESP32_AdBlocker or https://github.com/zachmorr/esper .

  • 

    AssociatedZaitronics @ Zaitronics on 17/12/2024 - 19:59

    +2

    Depens on your use case. ESP32 is more reliable and have more documentation than RP Pico based wireless boards. In terms of performance, I'm honestly not too sure as the RP2350 chip is still relatively new.

• 

  atj on 17/12/2024 - 20:12

  How much RAM and flash does this have?

  • 

    AssociatedZaitronics @ Zaitronics on 17/12/2024 - 20:18

    It shares same specs as our other ESP32 38 pin board https://zaitronics.com.au/collections/all-products/products/…
    I'm currently having the description fixed to include more important details

• 

  salehiam on 17/12/2024 - 20:54

  Waiting for some deals on PI zero 2W or PI5 ?

  • 

    AssociatedZaitronics @ Zaitronics on 17/12/2024 - 20:58

    Pi 5 is very unlikely to be on sale. The Zero 2 W was on sale a few weeks ago but is unlikely to be on sale again for a while.

• 

  buthidae on 18/12/2024 - 01:26

  What are people using for power cables and bricks?

  • 

    Borg on 18/12/2024 - 14:11

    Old phone chargers are the go or anything that has USB power out.

    • 

      Russ on 19/12/2024 - 03:34

      Old phone chargers

      That's risky. Phone chargers aren't designed to continuously put out power, and are typically only designed to last three to five years, the lifetime of the typical mobile phone.

      Chargers that come supplied with mobile phones are built really cheaply. The charger is just a cost to the mobile phone manufacturer, it's not like customers are going to say "I like brand xxxx because the chargers are really well-made and last a long time".

      Possibly GaN chargers will last longer, as they run cooler, and are sold by companies who DO want the get a reputation for quality chargers.

      • 

        Borg on 19/12/2024 - 13:55

        I've being using them for several years to power my ESP32's. Can't say I have had a single failure across x5 that run 24/7 for last few years. They don't suck much power and perhaps 3w on my ones.
        …and are typically only designed to last three to five years, Hardly an issue as one can just replace.

        Regardless, so what do you recommend to power these as a decent GaN charger would be an expensive method if used for each ESP32 board.

        • 

          buthidae on 19/12/2024 - 21:47

          @Borg: GaN does seem like a pricey option. A dirt cheap, but safe and with low overhead (i.e vampire draw), charger with USB-C (or a USB-A to USB-C cable) would be perfect to pair with each board

        • 

          Russ on 19/12/2024 - 22:52

          @Borg:

          Hardly an issue as one can just replace.

          My issue is how do they fail? I design electronics for a living, and regularly get asked by friends and family to repair broken stuff. I pull it apart, and frequently find the electronics is really dodgy, both poorly designed and shoddily made. I would classify many of them as a fire and/or shock hazard, should a lightning bolt strike the power lines near my house. I'm not licensed to repair mains equipment, so I don't even try, but I do pull them apart to see how/why they failed.

          But I do design electronics, including power supplies, for a living, and almost of my power supplies are still running. The earliest ones were made in 1992. I say almost all, because one came back with a hole in it that I could poke my thumb through, apparently a direct lightning strike to the building took it out and made holes in other items too.

          what do you recommend to power these

          I recently did a design including an ESP32, and for that customer I used:
          - a 12V AC-output plugpack
          - four surface-mount diodes forming a diode bridge
          - a 2200uF 50V electrolytic capacitor
          - a switchmode power supply circuit based on the LMR51610XDBV, using two resistors, six surface-mount ceramic capacitors, and an IHLP4040DZER330M11 inductor.

          Parts costs:
          Plugpack M9265 from Altronics with 12V AC output, $22 in single quantity
          Diodes about $1
          Panasonic EEU-FC1H222 electrolytic capacitor about $2 when buying ten
          LMR51610XDBV $1.50 when buying ten
          Resistors (0603 surface mount type) maybe $0.04 when buying strips of 100
          Ceramic capacitors (including three Samsung CL31B106KBHNNNE) about $1
          Add an SMBJ30CA TVS diode for surge suppression, about $0.40 when buying ten
          PCB (about 2 square inches in size) about $1 in 50+ quantities, but about $5 each delivered if you only want three, from OshPark.com

          So all up, about $33 each in small quantities, for a power supply that will last decades. All of the components are rated to 50V or higher, and spikes/surges that come through the plugpack will be clipped to about 48V by the SMBJ30CA.

          • 

            Borg on 20/12/2024 - 00:30

            @Russ: Nice if you have the time & funds for such a GaN device…..although not sure how one can determine it will last decades as all electronics can fail. I get your point though.

            For me, These $6 (or less) ESP32 boards are for home projects. Any ole spare 5v (or 12v) charger in the drawer does the job. Costs nothing and saves them going to landfill.