Recently I want to install a Temperature Insulation in my house since it’s very hot in daylight. But I really curious if this insulation really work lowering temperature in my house? For this obviously I will need a temperature sensor. So There is DHT-11 a very low price and low resolution with high noise level […]
Author: oektomo
How much battery you need for your (off grid) house?
To know how much battery you actually need to know how much you use per day. For most of us perhaps we don’t really know how much energy we use per day. The good news is you can estimate from you monthly electricity billing and how much every KWh cost. For example in my country […]
WISP mode in Open-WRT
In Open-WRT you can configure your router as a “Range Extender”. Not exactly as “Range Extender” because you will create different SSID. This post is a sequel from my post here. I will using TP-Link Router which I (finally) manage to flash with Open-WRT. This router are fresh from flashing, which means, everything is default […]
Flashing TP-Link TL-WR840N v4 with Open-WRT using FTP method
TP-Link TL-WR840N are made by TP-Link with lot of version. This tutorial specify to version 4 (v4) which has MediaTek MT7628AN chip with 8 MB Flash and 64 MB RAM. It’s quiet huge for the price, and most importantly it support Open-WRT and (hopefully) will supported for the next version of Open-WRT. In Indonesia, my […]
Configuring Wireless in Buildroot [buildroot part-5]
In previous post we already cover about how we can Enable the Wi-Fi. Until then, we still unable to use them in our linux. In this part, we shall cover how to configure and connect to Wi-Fi hotspot using some tools we will enable and configure these tools using configuration file. Here we go: $ […]
Using rootfs overlay in buildroot [buildroot part-4]
If we wanted buildroot to automatically copy some file in root file system in our target, we can use feature called “rootfs overlay”. This feature of buildroot enable us automate copying some file into root file system, usually it’s a configuration file. $ make menuconfig System configuration – () Root filesystem overlay we should fill […]
Enabling Wi-Fi USB Dongle in buildroot [buildroot part-3]
In this post we will talk about how to enable two kind chipset of Wi-Fi USB dongle in buildroot. 1. Atheros in TP-Link 722 We will start from kernel configuration:$ make linux-menuconfig 1 cfg80211 Networking support – Wireless – – [*] cfg80211 wireless extensions compatibility – – <*> Generic IEEE 802.11 Networking Stack (mac80211) 2 […]
Writing image in sd-card and connecting to serial terminal in BBB [buildroot part-2]
Writing image to sd-card:For convenience i create a shell script:$ vi writesd.sh #!/usr/binsudo dd if=output/images/sdcard.img of=/dev/mmcblk0 conv=fsync You need to verify the of=/dev/mmcblk0 to match the sd card in your computer, since running dd will erase the of=/dev/mmcblk0 disk completely. After that change writesd.sh permission to enable it to execute:$ chmod +x After we write […]
Introduction to Buildroot and enabling USB in BeagleBone Black (BBB) [buildroot part-1]
Buildroot is a build system made by bootlin, formerly known as free electron. With buildroot you can build a minimized linux from source and choose which package and service is running in depth and detail. Edit 25 May 2019: to correcting workflow. Initially we configuring kernel first then buildroot. Apparently it’s better to configure the […]
How MPPT in Solar Charge Controller can charge a battery?
This post is a part 2 of my discussion about MPPT and solar charge controller with my Friend (SekteCinta). On part 1 we discuss about what is MPPT and why it’s exist but haven’t discuss about MPPT in battery charge controller. SC: I still confuse about battery charger and MPPT M: So, There is no […]